Story 📜 A Slimey Affair

C: Marcille/Falin (Dungeon Meshi), wlw, slimepreg, sounds, belly movements, soft domme Falin, romance, sexual awakening, painful but arousing birth, slight corruption, lactation, nursing, NS4W

Patreon Requested & Pollwinner

Story written by RoseVirage

“It... it just... won’t stop growing... ” Marcille squeezed out between her teeth in discomfort, while clutching her once flat abdomen. What she held between her fingers didn’t really feel like a part of her body anymore; it had turned into a huge, tight mass of flesh, feeling like it had a life of its own.

And in a way, it did.

Its inhabitant moved visibly under the pressure of her fingers, shifting her whole belly slightly under dulled, lazily sloshing noises in the process. She looked like she was pregnant—full term.

Her party watched the spectacle for a brief second while shifting uncomfortably in their boots. Seeing Marcille like this was uncanny, knowing what she was going through even more. They had been attacked by a slime the night before. It was a pathetic fiend, killed within seconds, usually not worthy of any more mention. Though some of its mass must have found its way inside Marcille's body through a rather delicate entrance while it was still alive, leaving her as an incubator for new monsters.

There were methods to abort monster fetuses, sure. But when they had found out, the slime spawn was already too big for the easy ones. And the more complex procedures would take just as long as the whole slime gestation itself. So Marcille has decided to get rid of the monster in a less orthodox way: by simply giving birth to it.

Though now, feeling the weight, painful stretching, scary movements, discomfort, and sheer size of her belly, she regretted her decision. 

Laios was the first to speak.

“It’s important to keep calm, Marcille... Slimes feed on stress and fear. The reason for this is simple: the more stressed its host is, the more likely the slime will be killed prenatally. So once it senses it, it grows quicker and stronger to make sure it survives.”

Marcille stuck out her tongue in disgust. She felt like puking. This sounded like something Laios would make up just to hype monsters even further. And it also sounded wrong, how he used words like ‘prenatally’ as if he were talking about a humanoid baby, not a disgusting parasite nesting within her against her consent. 

Then she felt a hand on the bottom of her belly—my lord, her belly had an underside now—rubbing gently. It belonged to Falin.

“Don’t worry, Marcille. I will help you to relax. And with everything else, too.”

A faint blush warmed Marcille’s cheeks. Falin’s way of talking as if she were 100% sure always made her believe that she was indeed in safe hands. Furthermore, the way Falin touched her cursed middle... so naturally, so lovingly, without disgust or fear. Almost as if Marcille was pregnant with a real baby; maybe even Falin’s baby.

A violent blush forced Marcille to avert her face. Something has punched her in the guts; not the monster, but her own surprising thoughts.

Where was this weird notion coming from? Absolutely indecent. And not the right time, either.

“Sometimes slimes can grow way bigger than anticipated. I will prepare you a dish that should make your unwanted passenger leave early. I should find everything nearby,” Senshi added helpfully. He seemed awfully acquainted with humanoid-slime gestations. Marcille pondered on why. Then she thought of the reason. Then she decided to never think about it ever again.

Upon hearing the prospect of dinner, a rumble so loud that it made her middle almost vibrate ran through her stomach.

She blushed even more, hiding her face under her hands now. Next to her, she heard Falin chuckle sweetly, while she rubbed even bigger circles around Marcille’s... situation.
 It felt so soothing.

“Seems like you’re in dire need of some food, too. Let’s go with Senshi’s plan. To appease hunger and evict unwanted rental nomads!”

Marcille nodded. “O-okay. But... I want to be alone until dinner. No, scrap that... I want to eat alone, too,” she said ruefully, embarrassed beyond words about her appearance and the constant noises emitting from her body.

---

As she laid on the bed on the third floor of an abandoned house—two floors away from everyone else - she thought about Falin’s gentle touches again.
 It was strange... Why did this do so much to Marcille? Sure, her cute human best friend did some things now and then that were just too lovely to bear, but this time it felt different... Her hand had been so confident, so motherly in a way, but also... also... something else, too. Marcille couldn’t pinpoint it.

Only now did she notice that her own hands were resting on her hefty mound, tracing the shape absentmindedly. 

She quickly withdrew them, embarrassed. Why had she done this? The thing inside her was disgusting. An elf carrying a monster in their womb was disgusting. Her looking like this was disgusting. These sounds rumbling through her gut were disgusting. Falin acknowledging all of this was ... it was...

Maybe it wasn’t as……

Marcille gasped at an unexpected feeling. Something was brushing over her nipples. As she looked down, she saw that they were hardened; So much so that it was visible through several layers of fabric.

They had rubbed against her clothes in their sensitized state, making it feel as if something had touched her gently.

“What the... ” she started whispering to herself, as a knock on the door jolted her from her thoughts.

She quickly grabbed one of the dusty pillows next to her, covered her chest area, and answered, “Come in!”, not being able to hide her nervousness completely from her tone.

The door opened, and in came Falin, with a huge bowl of steaming something. It smelled minty-herbal but also savory-hearty. Marcille’s stomach gave away another deep rumble upon the smell. Or maybe it wasn’t the stomach, but the cursed fiend. It was hard to tell and Marcille didn’t really want to think too much about it.

“I hurry, I hurry!” Falin answered towards the noise in a playful, teasing tone.

Marcille moaned. “I’m sorry … It’s... It’s not that I can control it... ”

“I know, my dearest, it’s okay,” Falin responded sweetly, putting the dish right in front of her on the pillow, so that Marcille’s shape in delicate conditions served as a table. “I find it rather cute.”

“You... do?” 

Falin nodded, and Marcille thought - not for the first time and certainly not for the last - that Falin was rather peculiar and unique; in the best and most charming way.

“Now,” Falin added, “Senshi said that you shouldn’t be alarmed by the taste. It’s technically some sort of poison, so your taste buds will tell you not to eat it at first, but that should change quickly. But don’t worry, it’s just the tiniest dose, and humanoids are mostly immune to it. He also said that it takes a while for the herbs to take effect, so you have to prepare for the slime to take in the nutrients at first. I’m not sure what he meant by that.”

Marcille gulped. Whatever Senshi meant, it couldn’t be good. Eating slightly dangerous poison sounded scary, too.

“Well then, I’ll leave you alone now,” Falin said.

As she tried to turn away, Marcille grabbed her by the end of her sleeve.

Immediately, Falin turned her attention back to Marcille, laying both of her hands on the one that had reached for her clothes. This immediate, wholehearted display of attentiveness made Marcille’s heart flutter.

“What’s wrong, Marcille?”, Falin asked, full of care and touching alertness.

“I … I feel weird. And... and I’m scared. Could you maybe... stay after all..?”

“Of course, my love.”

…My love. Wow.
 It clearly was just a term of endearment, but Marcille couldn’t help the heat reaching her face again.

“Are you sure it’s okay…? With… with these… sounds… and how gross I look…”

Falin came closer, sitting next to her on the bed, squeezing Marcille’s hand tighter. “I would never find you gross! You will always be of the most pristine beauty to me, no matter how your body changes! Because you shine so brightly, it infuses every part of you.”

Marcille stared at her, her face as red as a tomato. She couldn’t argue with her, because she knew feelings like that were indeed real; because that was exactly how she felt about Falin, too. No matter how she looks, she would always be the most gorgeous creature on earth.

“And as for the sounds... I told you already, and I absolutely meant it: I find them adorable. To be honest, I find your whole state adorable.”

Marcille looked at her, thunderstruck. Like on cue, her stomach rumbled again, this time more aggressively than before.

“You really should eat now, Marcille,” Falin urged her with gentle pressure.

Blushing furiously, Macrille started to eat. The stingy mintiness of the stew took her back for a second, but it wasn’t important now; important was…

“You ... really think it’s adorable... ? Why... ?”

Falin looked at her with a smile, then looked out the window, fixating on something in the darkness only she could make out.

“It might not be so adventurer-like of me to say, but I think all life is beautiful.”

Marcille chewed the perfectly cooked meat silently, trying to grasp Falin’s words. 

“Of course I understand that it’s a burden to you. You didn’t ask for this, and you carry something we consider a foe. You have every right to be upset and hurt. But I also have a right to find it cute, right... ? You are creating life, I always found this a very primal beauty... something even more magical than magic itself, if that makes sense.”

It didn’t make sense to Marcille. But it made sense for Falin, and that was all Marcille needed to feel her.

“If you... if you like... you can touch it again. As much as you want,” the elf uttered sheepishly, then put another spoon of food into her mouth.

Falin smiled as if the sun were rising, then immediately started to caress Marcille’s middle as if it were the most casual thing in the world. 

At first, Marcille tensed up. Even more so when she felt the spawn inside her squirm. Maybe in response to the food, or to the touch. It created even more uncomfortable and unnatural sounds, but she decided to trust Falin in her assertion, and just endured them.

Then, after some heartbeats, she relaxed a little; Just to tense up again when she looked into Falin’s face: there was something in the human’s expression, something more than just simple rapture. Falin was completely focused on Marcille’s change, a faint blush kissing her cheeks. It really looked as if her own baby was growing inside Marcille… and as if she would find it… arousing…?

Marcille’s body reacted strongly to those thoughts. She felt her nipples harden again, her undergarments dampen. She thanked the gods that none of it was visible.

Before she knew it, Marcille had emptied the whole huge bowl. She only noticed because her spoon grew empty. 

“Oh… wow… I ate it all… I never thought I’d - OOF”

The elven girl’s words were interrupted by a loud gurgle. Then a guttural a rumble. The bowl fell out of her hands and onto the floor, while she grabbed her bloated flesh, moaning. The slime spawn vibrated within her, stretching, twisting… growing. Her abdominal muscles, pulled apart from the heavy load underneath, contracted in response, which made the whole ordeal even more uncomfortable. 

“Marcille!” Falin exclaimed, worried.

“It’s… it’s growing again… so quick this time… By the gods… I-I don’t think I can… ooof… grow any bigger…”

Glorrrrp, groaaaan. Violent shifting. The skin of her swollen mound stretching with every throb.

“Relax, Marcille…! Remember what Laios said, stress makes them grow even bigger. Please try to calm down…!”

“I can’t, it’s stretching me … ah… oooof-”

Falin gently took her hands, which were clutching her belly, and kissed them. “Relax, Marcille. It’s okay. Everything is going to be okay. Focus on me.”

Marcille opened her eyes, looking into Falin’s reassuring face.
 The cramps loosened up a little, the gurgles grew more silent.

“That’s it. I’m proud of you. For now, I just want you to be my good girl, okay? Listen to what I say. You don’t have to do anything else for tonight, okay?”

Marcille’s heart pumped addicting new feelings through her veins, her breathing accelerated slightly. Had Falin just called her… a good girl? By everything holy, this was… this was something else.

“Can you do that for me, Marcille?”

“Y-yes…” Marcille stuttered.

“Good girl.”

There it was again.

Marcille let out a small, shocked moan. She didn’t even notice. Falin didn’t either; Or maybe she thought of it as a sound of discomfort or pain.

“Now lean back and let me oil your skin, okay? It won’t do too much, but maybe it helps with the stretching pain. And you, my love, will tell me if you need help, or if something is uncomfortable, okay? Can you do that for me?”

“Y…. yes….” Marcille repeated. She felt as if she was in a trance. Or dreaming. 

She watched as Falin rolled up her dress, professionally applied warm oil to her skin (where did she pull that from? Had she taken this with her from the start?) and massaged it in a manner as if she had done nothing but this for her whole life.

Every stroke of her delicate, strong hands made Marcille shiver. She could feel her undergarment now clinging tightly to her wet folds, she could feel her body pushing against Falin’s hands ever so slightly, out of her control.

Stop it, Marcille… stop it. This was… indecent. This wasn’t what Falin meant… or… was it…?

“Your belly has stopped cramping… I can feel the monster still growing, but it has slowed down. You’re doing great.”

As Falin talked, her thumb brushed over Marcille’s belly button, which, to her surprise, was now protruding outward. She gasped. Falin stopped immediately.

“Are you okay?”

“Y-yes … it’s just… this just felt incredibly strange…”

The worry left Falin’s expression, changing into a gentle smile.

“Your navel? That’s normal. Your body isn’t used to having it everted like this, so it’s very sensitive.”

“It… it looks gross.”

Falin’s expression made Marcille immediately regret her words.

“I thought you were going to be a good girl. I won’t let you call my friend gross again.”

“Yes, ma’am. S-sorry.”

Did she just say ‘ma’am’? Dear lord, grasping any clear thoughts was almost impossible. Marcille was feeling dizzy.

“I find it very, very cute. And enticing…”

“Enticing?”

Before Marcille could ask further questions, the human girl had already bent forward and gave her newly achieved outie the softest little kiss.

Marcille gasped, her hands over her mouth, a second too late. She couldn’t hold the reaction back; Not only because of the view and fact of this, but also because of how incredibly intense this sensation, caused by nothing more than the faintest kiss, felt. 

Falin lifted her head, looking at her with a somewhat guilty and surprised expression. “Is that okay? Can I appreciate it some more?”

Marcille couldn’t answer. But she managed to nod her head in disbelief.

Falin smiled and leaned down to kiss Marcille’s belly button again. This time with more involvement of her lips.

It was so, so intense. And intimate. And Marcille finally began to understand that Falin wasn’t just saying that she liked how Marcille looked like that - she was actually feeling that way. And how!

Lost under the weight of her swollen middle, dizziness, surprise and arousal, Marcille could do nothing but grant Falin her body, endure the rush of feelings and helplessly watch this surreal scenery.

The tiny kisses turned more direct, accompanied my Falins experienced hands, continuing to trace Marcille’s gravid flesh, until Falin started to… actually suckle. Not strongly, just very very delicately, but that was enough to make Marcille see stars. The sensation was not to compare - maybe with touching a newly healed scar with its skin being paper thin. A spot that felt still dangerous and unwanted, but hungry for loving touches and especially sensitive.

Marcille lost herself more and more. She felt used by both Falin and the slime inside her, playing with her body as they wished, but it didn’t scare her anymore. Her body was flooded with arousal, unlike ever before. Her entrance throbbed in dire need of some relief, her nipples were so hard and sensitive that she -

Another completely new sensation overcame the elven girl, and she moaned in surprise and even more rushes of arousal.

Falin stopped within a heartbeat again, looking worried. Borderline panicking, Marcille pulled down the pillow from her chest area, revealing the upper part of her clothes soaked with two small dark spots.

“W-what…”

“Oh, what a nice surprise…!” Falin said with shining eyes and a telltale flushed face, “Your body is seeing the fetus as its offspring…! Can I?”

Marcille nodded without really knowing what exactly Falin was asking permission for. She was still trying to process what was happening to and with her.

Falin nodded, too, and pulled up Marcille’s dress higher, exposing her breasts.

Both girls stared at them in flushed surprise. They were definitely bigger than before, albeit slightly - they looked incredibly tight and full, with hard, darkened nipples that released drops of transluscent-white liquid on their own.

“What -” Marcille repeated, too shocked to be embarrassed, but Falin was already taking action, leaning down, tasting her.

Marcille nearly became undone.

“Falin, my gosh - you --- ahhh ----”

“Sorry!” Falin answered with a flushed and guilty face, “I couldn’t hold back… Should I not…?”

Marcille answered before she even thought about the question. “No, please -- this feels so good ----”

And it really, really did. She hadn’t noticed how incredibly tight her breasts had grown, how they ached for touch and release. She didn’t even care anymore how fucked up it was that her body produced milk as if this were a normal pregnancy. She just wanted the pressure to be gone, her sensitive nipples to be caressed, her milk to be drunk. By Falin. Only by her. The woman who seemed to appreciate it beyond imagination. 

This whole scene would have embarrassed and distressed Marcille without end before - but she was far past caring now.

Falin smiled - it looked authentic but a little exhausted, as if she were enduring something unknown - and leaned down to relieve Marcille off the pressure. It felt … indescribable. Marcille didn’t have the words nor any references to explain these sensations, and the raging storm of guilt, lust, confusion, fear, and shame grew just as obscenely massive as her belly.
 It was relieving, first and foremost - but also so, so intense, knowing that part of her entered Falin’s body. That she was… good gods, that she was nursing her.

As Marcille heard Falin actually gulping, she clutched her hands around her mouth as her entire world narrowed down to just this moment.

This was insanity… utter debauchery… but it just felt so, so good.

“You’ve grown such a big, stunning belly, Marcille… your body is doing amazing things,” Falin stated and leaned back to empty her other breast, too.

Marcille could barely answer. She was lost in the sensation, though absentmindedly she noticed that her bump was now absolutely huge. Like she was overdue… or pregnant with multiples. 

“You … really… ah… think so…” she gasped while clutching her fingers into the mattress.

“Yes… just look at yourself. Look how your body manages everything. Look how huge you are… it’s beautiful. If I’d be the slime, I’d be proud of you. I’d love to grow within you.”

What a weird, twisted sentiment again… yet Marcille’s heart pounded even faster upon those words.

“You’re doing such a great job. I’m proud of you anyway, even though I’m not the slime.”

Marcille couldn’t fight the images and wishes appearing: Wanting to grow even bigger for Falin, wishing to please her further. She wanted to be her good girl. To make her even more proud.
 She didn’t want to think about how unhinged all of this was.

“Falin…” Marcille moaned, in a helpless attempt to transmit those feelings to her.

Then, a deep gurgle shook her insides. She felt the spawn twist and turn more aggravated now. Her abdominal muscles contracted on their own.

The human girl stopped her heavenly treatment to watch the spectacle with flushing cheeks. “It’ll start soon…”, she whispered.

“Oh gods -” Marcille moaned in fear, but not without another dash of misplaced arousal.

Falin turned towards her face again, gently brushing the back of her fingers over her cheek. “It’s okay. It won’t hurt nearly as much as a humanoid birth. I know you can do it. And I’m with you, Marcille. I love you. I promise it will be alright.”

Wait. Wait, wait - wait, what? Did she just -

GROAN. Marcille moaned as another cramp hit her, together with rejuvenated squirming and this awful, vile, uncomfortable stretching. She arched her back. Her moan turned into a scream.

“How peculiar… your body has started the labor process, but the Slime is still growing…”, Falin observed with a strange calmness.

Even in distress, Marcille could hear the enticement in Falin’s voice.
 It seemed as if her perverted, rash wish to grow even bigger was granted - and that Falin was enjoying it, too.

But this was… bad. Really bad. There was no room left. Marcille’s skin could only stretch so far. She could feel that she was at her limit - that her womb couldn’t grow even bigger, that everything from this point on just got more compressed instead of expanding.

“Falin!!” Marcille screamed and writhed in fear of the upcoming agony, “This is bad!! I can’t grow any bigger, please! Please help me!”

Before she knew it, Falin had already pulled down her undergarnet and spread her legs.

She was too weak and scared to complain, too embarrassed and panicked to question it.

“You’re barely dilated yet… You have to relax, Marcille. Give in to good feelings, not stress.”

“That’s easy - OOF - to… ah… to say when you’re not growing a monster yourself - OOOF”

Marcille dared to open her eyes for a brief moment, and gasped upon seeing her body: She was incredibly huge, and her tight looking, sweat covered belly morphed unnaturally under a combination of muscle contractions and its godforsaken inhabitants writhing inside.

“Ah - help, oh gods - I will die --”

Falin was next to her face in a heartbeat, taking it into both hands. 

“Marcille. Look at me. You won’t die. You will birth these creatures, and not just that: you will enjoy it. I can see it. I see all the signs of your body… it loves its state. All you have to do is give in. Let yourself be guided by your body.”

“F-Falin… I… I can’t ---”

“You can.”

And with those words, Falin bent down and met Marcille’s lips with her own. Gentle at first, but then with more urging desire. As their kiss went deeper, Marcille’s rational thoughts melted away. She lost herself in Falin’s lips.
 She understood.
She was nothing but a breeding vessel right now - there was absolutely nothing she could do about it anymore, so might as well enjoy it. No matter how messed up it was. No matter how much she would regret it later. Maybe she would never be able to look at herself in the mirror again; but right now, she would do everything Falin wanted of her. She would be her good girl and make her proud.

Despite knowing better, she couldn't help but revel in this sinful pleasure now – relishing in the way Falin's attention lavished upon her.

She felt Falin’s finger kneading her sore, plump breasts at first… then she felt them drifting deeper over her raging belly, making sure to caress her belly button in the process.

“So big…” Falin whispered in the kiss. Marcille moaned. The idea that her obscene middle was pleasing Falin only served to fuel her own lustful desires further.

Another contraction hit Marcille, her swollen belly tightening painfully around whatever lurked within its depths. This time, though, Marcille gave into the twisted lust it created in her loin region, not the crippling fear.

Falin’s fingers drifted even deeper. Once they reached Marcille’s clitoris, her body cramped up again - not in labor contractions, but an unforeseen, sudden climax.

Marcille couldn’t even react properly - all she could do was scream. 

Falin chuckled, called her a good girl again, then kissed her right into the scream.

If there were still any shackles left holding Marcille back, they were gone now.
 She kissed back, screamed some more, spread her legs further and pushed her entrance needily against Falin’s loving fingers.

“That’s it… you’re doing so well, my love. Come for me. Birth your babies for me,” Falin whispered into the kiss with such intoxicating intensity, that Marcille felt another orgasm blooming right away. Her whole body cramped up stronger than ever before. She barely noticed the sudden ripple through her womb, but she could feel the masses of slimy amniotic fluid gushing out of her entrance. 

Falin laughed louder now, proud, sweet and hungry in a way, and started to stimulate Marcille more passionately.

“It’s happening… it’s happening, Marcille! You’re doing great!”

Suddenly feeling a new level of urgency washing over her, Marcille began pushing with all her might - heedless to the searing pain shooting through her lower abdomen. She let out a shrill scream that echoed throughout the whole building.

Falin kissed her again.

“I love you - I love you, I love you! I love you!” Marcille screamed into the kiss as if she were begging for mercy.

“My precious Marcille…I’m with you, I will always be…! I love being here with you, I love experiencing this with you!”

Marcille moaned louder. There was no way this was real. But she didn’t care if this was just a fantasy playing in her head to get her through this traumatic experience. 

She felt Falin’s finger entering her. Was she checking her cervix again? Who cared, not Marcille. It felt like heaven, having Falin in her.
She heard her beloved human saying: “You’re close… so close…” 

Whether she meant another climax or the birth, she couldn’t tell.

Then, overcome with a surge of primal instinct, Marcille heaved herself up - feeling the burning stretch of her cervix and her vagina bulging outward.

The sudden pressure tipped her over the edge again. She came together with the first of the offspring slimes. It was smaller, but harder than she thought, and it stimulated her in a way she didn’t know was possible.

Under painful and orgasmic screams, sweat dripping from her forehead and contracting, rockhard, mountain of a belly, she felt how the spawn was pushing Falin’s finger out.

And then it was born.

“Beautiful… gorgeous… you did it, my love…!” Marcille heard Falin say. A temporary blackness cushioned both her sight and hearing. The cramps stopped for a brief moment, letting Marcille catch her breath.

“It’s so cute… And it shimmers like golden honey, like your hair…!”

Marcille’s heart skipped a beat.
What -

Her body didn’t let her think more than necessary. Another paralyzing contraction shook her to her core, cramping up every single muscle within her. Marcille screeched even louder this time, not even able to hold back in fear of what the others outside might think. She felt another popping sensation ripple through her, even more fluids gushing out of her. Falin’s loving fingers stretch her folds to help her bring another droplet of monster into this world. Something was brushing over the most sensitive spots of her entrance, though Marcille couldn’t tell if it was caused by Falin’s other fingers or something else.

It would continue like this for dozens of more deliveries, with each one shoving Marcille into more orgasms, with babies varying in size and consistency, for more sweet words of endearment, and for over two hours. 

Only when the very last spawn was born did Marcille’s body let her go; allowing her to fall into the deepest slumber. She was dreaming about Falin. About being her everything: Her wife, her secret, her good girl, her toy, her breeding vessel. About swelling up proudly again and again for her wonderfully twisted, sweet loving human, birthing all kinds of monsters into her loving words, and feeling more fulfilled than ever before.

About her slime offspring, curious and nuzzling close to the human girl who didn’t reject them.

She knew: Once woken up, she would not be able to kill them.

And maybe, just maybe… she would even keep one.

Rose here! This was such a wild ride for me to write. It turned out way more naughty and longer than I planned! I just couldn't help myself. I hope you guys enjoy a way more saucy story than usually, too. Let me know what you think and thank you for that cool request! And thank you so much @ those who are here because of my stories, too!!